Die for making joints of forceps



(No Model.)

A. BRUSTLE 8: A. SIEGEL.

' DIE FOR MAKING JOINTS 0F FORGEPS, PINGHERS, &c. No. 346,578. Patented Aug. 3, 1886.

Fig.1. Fig.5.

5% m Fw Law ARDREYV BRI TSTLE AND ANDRE\V SIEGEL, OF HYDE PARK, MASSACHUSETTS.

DIE FOR MAKlNG JOINTS OF FORCEPS, PINCHERS, 81.0.

SPECIFICATION forming part of Letters Patent No. 346,578, dated August 3, 1886.

Application filed December 24, 1885.

T0 aZZ 1071,0122 it may concern:

Be it known that we, ANDREW Bniis'rrn and ANDREW SIEGEL, of Hyde Park, in the county of Norfolk and State of Massachusetts, have invented a certain new and useful Improvement in Punching-Dies, of which the following is a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains, to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a vertical longitudinal section of the movable setting-die; Fig. 2, a like view of the stationary or bed setting-die; Figs. 3 and A, respectively, vertical transverse sections of the dies shown in Figs. 1 and 2; Fig. 5, a vertical longitudinal section of the movable finishing-die; Fig. 6, a like View of the stationary or bed finishing-die; Fig. 7 and 8, respectively, vertical transverse sections of the dies shown in Figs. 5 and 6; Fig. 9, a vertical longitudinal section showing a blank before it is punched; Fig. 10, a like view showing the blank as it leaves the setting-dies; and Fig. 11, a longitudinal section of the blank as it leaves the finishing-dies.

Like letters of reference indicate corresponding parts in the different figures of the drawings.

Our invention relates to that class of punch ing-dies which are employed in punching and forming the jointhole in the handles of for ceps, pinchers, &c.; and it consists in anovel construction and arrangement of the parts, as hereinafter more fully set forth and claimed, by which more effective devices for this purpose are produced than are now in ordinary use.

For convenience of reference we denominate the dies, by which the handles are partiallypunched the setting-dies, these being shown in Figs. 1, 2, 3 and 4, and those by which the process is completed the finishing dies, the latter being shown in Figs. 5, 6, 7, and S.

The nature and operation of the improvement will be readily understood by all conversant with such matters from the following explanation.

In the drawings, A represents the body of Serial No. 186,638. (No model.)

the movable or upper setting-die, and B the body of the stationary or bed setting-die.

The upper die, A, has a stock, 0, detachably fitted into its lower face by an Ordinary tongue and groove, m, and is provided with a downwardly-projecting punch, a", which is detachably fitted into said stock.

The bed setting-die B is grooved longitudinally on its upper face, as shown at f, and provided with an upwardlyq'n'ojecting punch, d, which is arranged centrally in said groove, but not precisely under the punch 00, the relative positions of said punches being shown in Figs. 1 and 2.

A stripper, D, is hinged at c, in the groove f, said stripper being provided with a latterally-projecting flange, 3 at is lower edge, hav ing a hole, 1, through which the punch it projects. A removable plate, E, is secured in the groove f opposite the stripper D, which may be readily replaced when worn by use. A pendent hook, H, is jointed to one end of the body of the movable setting-die, said hook being adapted to engage a projection, t, on the end of the stripper D, when said die descends to its fullest extent.

The body of the movable setting-die A is dovetailed, as shown at r, to fit a correspond ing groove in the carrier of a press, and the body of the bed setting-die B dovetailed, as shown at b, to fit a corresponding groove in a supporting-bed.

Referring again to the drawings, J repre sents the movable finishing-die, and K the bed finishing-die. The movable die Jis provided with a downwardly-projecting elongated detachable punch, L, and the bed-die K with a flaring socket or mortise, lll, from which a hole, a, adapted to receive the punch L, opens downwardly through the bottom of the die. Fitted into the socket M there are two clamps, z, adapted to work vertically in said socket on the guide-screws g, the inner ends of which enter grooves h,in the outer faces of said clamps. Arranged horizontally in suitable sockets formed in the inner faces of said clamps there are two short rods, 2, provided with coiled springs k, which act expansively to force said clamps apart. Corresponding shallow vertical grooves, Z, are formed in the inner faces of the clamps z, for receiving the punch L,

and there are also deeper corresponding transverse grooves 10, formed in the inner faces of said clamps for receiving the blank shown in Fig; 10. The flange y of the stripper D is thickened or raised near its hinged end, as shown at e, to properly support the blank.

I11 the use of our improvement, the blank shown in Fig. 9is placedin the bed setting-die in the groove w.

B, with the lower face of the part a resting on the raised part c of the flange 1 and the shoulder j of said blank on the punch d. The movable die A is then caused to descend, forcing the punches cl xinto the blank and partially pu nching the same, the punch d forming the indentation 14, and the punch the indentation15,

as shown in Fig. 10, after which the die A is raised, the hook H drawing up the stripper D and disengaging the blank from the punch d. The blank indented or partially punched, as shown in Fig. 10, is then placed in the grooves in the clamps z, with its shoulder j resting on the shoulders 2i in said grooves, and its part it in that portion of said grooves marked 25. (See Fig. 6.) The dieJ is then caused to 1 descend,the punch entering. the indentation in the blank, and forcing the blank and clamps z downwardly into the socket M. The inner faces of the clamps z are vertically arranged in parallelism with each other, but their outerfaces areinelined or wedge-shaped, and as they descend into the flaring socket M the clamps are forced inwardly, compressing the springs 7c, and grasping the blank firmly between them reach the bottom of said socket, said punch continuing to descend will punch out or re-- move the piece 20, between the indentations 14 and 15, thus completing the forma-' tion of the joint-hole 22, as shown in Fig. 11. v

The blank,being grasped firmly by the clamps z,will be prevented-from unduly bulging at the lower ends of the grooves 71.

The dies J K are respectively provided with dovetails,in like manner and for the same purpose as already described in respect to the dies A B.

Both sets of the dies are designed to be dis- Vhen clamps forced downwardly in the socket M by the punch L posed in the same press but, if desired, the setting-dies A B may be arranged in one press and the finishing-dies J Kin another, it not being deemed essential to show the press or presses, which may be of any suitable form and construction.

WVe do not confine ourselves to the use of the grooves h and screws 9 to guide the clamps and prevent them from being withdrawn from the socket M, as any other suitable means may be employed for the same purposes; neither do we confine ourselves to the use of the plate E, rods 2', or springs 7c, as the plate and rods may be omitted,and aspring orsprings ofanother form employed, if desired.

Having thus explained our invention, what we claim is- 1. In a device for forming the joint-hole in pincher-haudles, forcep-handles, &c., the die A, provided with the punch w, and hook H, in combination with the die 13, provided with the punch (Z, and stripper D, substantially as described.

2. The plate E, in combination with the die 13 and stripper D, substantially as and for the purpose set forth.

3. In a device for forming thejoint-hole in pincher-handles, forcep-handles, 850., the die J, provided with the punch L, the die K, having the flaring socket M, and hole a,tlie clamps 2', provided with the grooves Zwh and springs 70, and the screws 9, combined and arranged to operate substantially as described.

4. In a device for forming thejoint-hole in pincher-handles, forcep-handlcs, &c., a movable die provided with a downwardly-projecting punch and hook or catch, in combination with a bed-die provided with an upwardlyprojecting punch and stripper, said hook or catch being adapted to engage the stripper and disengage the blank from the lower punch as said movable die is raised, substantially as set forth.

5. In a device for forming thejoint-hole in pincher-handles, forc'ep-handles, &c., a movable die provided with adownwardly-projecting punch, in combination with a bed-die provided with a flaring socket, clamps adapted to wedge in said socket and grasp the blank to be punched, a spring or springs for expanding or opening the clamps,and means for stopping the upward movement of the clamps to enable the punch to be withdrawn from the blank or stripped, substantially as described.

ANDRE? BRUSTLE. ANDREWV SIEGEL. \Vitnesses:

O. A. SHAW, L. J. WHITE.

ICO 

